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      1 /*
      2  * Copyright 2014 Google Inc.
      3  *
      4  * Use of this source code is governed by a BSD-style license that can be
      5  * found in the LICENSE file.
      6  */
      7 
      8 #include "Resources.h"
      9 #include "SkData.h"
     10 #include "SkImage.h"
     11 #include "gm.h"
     12 #include "sk_tool_utils.h"
     13 
     14 static void draw_image(SkCanvas* canvas, const char* resource, int x, int y) {
     15     sk_sp<SkImage> image(GetResourceAsImage(resource));
     16     if (image) {
     17         canvas->drawImage(image, SkIntToScalar(x), SkIntToScalar(y));
     18     } else {
     19         SkDebugf("\nCould not decode file '%s'. Did you forget"
     20                  " to set the resourcePath?\n", resource);
     21     }
     22 }
     23 
     24 /*
     25   This GM tests whether the image decoders properly decode each color
     26   channel.  Four copies of the same image should appear in the GM, and
     27   the letter R should be red, B should be blue, G green, C cyan, M
     28   magenta, Y yellow, and K black. In all but the JPEG version of the
     29   image, the letters should be on a white disc on a transparent
     30   background (rendered as a checkerboard).  The JPEG image has a grey
     31   background and compression artifacts.
     32  */
     33 DEF_SIMPLE_GM(colorwheel, canvas, 256, 256) {
     34     sk_tool_utils::draw_checkerboard(canvas);
     35     draw_image(canvas, "color_wheel.png", 0, 0);  // top left
     36     draw_image(canvas, "color_wheel.gif", 128, 0);  // top right
     37     draw_image(canvas, "color_wheel.webp", 0, 128);  // bottom left
     38     draw_image(canvas, "color_wheel.jpg", 128, 128);  // bottom right
     39 }
     40 
     41 DEF_SIMPLE_GM(colorwheelnative, canvas, 128, 28) {
     42     SkPaint paint;
     43     sk_tool_utils::set_portable_typeface(&paint, "sans-serif",
     44                                          SkFontStyle::FromOldStyle(SkTypeface::kBold));
     45     paint.setTextSize(18.0f);
     46 
     47     canvas->clear(sk_tool_utils::color_to_565(SK_ColorLTGRAY));
     48     paint.setColor(SK_ColorRED);
     49     canvas->drawString("R", 8.0f, 20.0f, paint);
     50     paint.setColor(SK_ColorGREEN);
     51     canvas->drawString("G", 24.0f, 20.0f, paint);
     52     paint.setColor(SK_ColorBLUE);
     53     canvas->drawString("B", 40.0f, 20.0f, paint);
     54     paint.setColor(SK_ColorCYAN);
     55     canvas->drawString("C", 56.0f, 20.0f, paint);
     56     paint.setColor(SK_ColorMAGENTA);
     57     canvas->drawString("M", 72.0f, 20.0f, paint);
     58     paint.setColor(SK_ColorYELLOW);
     59     canvas->drawString("Y", 88.0f, 20.0f, paint);
     60     paint.setColor(SK_ColorBLACK);
     61     canvas->drawString("K", 104.0f, 20.0f, paint);
     62 }
     63